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Spis treści

Python in a Nutshell. 4th Edition eBook -- spis treści

• Preface
  • How To Use This Book
    • Part I, Getting Started with Python
    • Part II, Core Python Language and Built-ins
    • Part III, Python Library and Extension Modules
    • Part IV, Network and Web Programming
    • Part V, Extending, Distributing, and Version Upgrade and Migration
  • Conventions Used in This Book
    • Reference Conventions
    • Version Conventions
    • Typographic Conventions
  • Using Code Examples
  • OReilly Online Learning
  • How to Contact Us
  • Acknowledgments
• 1. Introduction to Python
  • The Python Language
  • The Python Standard Library and Extension Modules
  • Python Implementations
    • CPython
    • PyPy
    • Choosing Between CPython, PyPy, and Other Implementations
    • Other Developments, Implementations, and Distributions
      • Jython and IronPython
      • Numba
      • Pyjion
      • IPython
      • MicroPython
      • Anaconda and Miniconda
      • pyenv: Simple support for multiple versions
      • Transcrypt: Convert your Python to JavaScript
    • Licensing and Price Issues
  • Python Development and Versions
  • Python Resources
    • Documentation
      • Python documentation for nonprogrammers
      • Extension modules and Python sources
      • Books
    • Community
      • Python Software Foundation
      • Workgroups
      • Python conferences
      • User groups and organizations
      • Mailing lists
      • Social media
  • Installation
  • Installing Python from Binaries
  • Installing Python from Source Code
    • Microsoft Windows
      • Uncompressing and unpacking the Python source code
      • Building the Python source code
    • Unix-Like Platforms
      • Uncompressing and unpacking the Python source code
      • Configuring, building, and testing
      • Installing after the build
• 2. The Python Interpreter
  • The python Program
    • Environment Variables
    • Command-Line Syntax and Options
    • The Windows py Launcher
    • The PyPy Interpreter
    • Interactive Sessions
  • Python Development Environments
    • IDLE
    • Other Python IDEs
    • Free Text Editors with Python Support
    • Tools for Checking Python Programs
  • Running Python Programs
  • Running Python in the Browser
    • PyScript
    • Jupyter
• 3. The Python Language
  • Lexical Structure
    • Lines and Indentation
    • Character Sets
    • Tokens
      • Identifiers
      • Keywords
      • Operators
      • Delimiters
      • Literals
    • Statements
      • Simple statements
      • Compound statements
  • Data Types
    • Numbers
      • Integer numbers
      • Floating-point numbers
      • Complex numbers
      • Underscores in numeric literals
    • Sequences
      • Iterables
      • Strings
      • bytes objects
      • bytearray objects
      • Tuples
      • Lists
    • Sets
    • Dictionaries
    • None
    • Ellipsis (...)
    • Callables
    • Boolean Values
  • Variables and Other References
    • Variables
      • Object attributes and items
      • Accessing nonexistent references
    • Assignment Statements
      • Plain assignment
      • Augmented assignment
    • del Statements
  • Expressions and Operators
    • Comparison Chaining
    • Short-Circuiting Operators
      • The conditional operator
    • Assignment Expressions
      • := in an if/elif statement
      • := in a while statement
      • := in a list comprehension filter
  • Numeric Operations
    • Numeric Conversions
    • Arithmetic Operations
      • Division
      • Exponentiation
      • Comparisons
    • Bitwise Operations on Integers
  • Sequence Operations
    • Sequences in General
      • Sequence conversions
      • Concatenation and repetition
      • Membership testing
      • Indexing a sequence
      • Slicing a sequence
    • Strings
    • Tuples
    • Lists
      • Modifying a list
      • In-place operations on a list
      • List methods
      • Sorting a list
  • Set Operations
    • Set Membership
    • Set Methods
  • Dictionary Operations
    • Dictionary Membership
    • Indexing a Dictionary
    • Dictionary Methods
  • Control Flow Statements
    • The if Statement
    • The match Statement
      • Building patterns
      • Literal patterns
      • The wildcard pattern
      • Capture patterns
      • Value patterns
      • OR patterns
      • Group patterns
      • Sequence patterns
      • as patterns
      • Mapping patterns
      • Class patterns
      • Guards
      • Configuring classes for positional matching
    • The while Statement
    • The for Statement
      • Iterators
      • Iterables versus iterators
      • range
      • List comprehensions
      • Set comprehensions
      • Dictionary comprehensions
    • The break Statement
    • The continue Statement
    • The else Clause on Loop Statements
    • The pass Statement
    • The try and raise Statements
    • The with Statement
  • Functions
    • Defining Functions: The def Statement
    • Parameters
      • Positional parameters
      • Named parameters
      • Positional-only marker
      • Positional argument collector
      • Named argument collector
      • Parameter sequence
      • Mutable default parameter values
      • Argument collector parameters
    • Attributes of Function Objects
      • Docstrings
      • Other attributes of function objects
    • Function Annotations
    • The return Statement
    • Calling Functions
      • Positional and named arguments
      • Keyword-only parameters
      • Matching arguments to parameters
      • The semantics of argument passing
    • Namespaces
      • The global statement
      • Nested functions and nested scopes
    • lambda Expressions
    • Generators
      • yield from
      • Generators as near-coroutines
      • Generator expressions
    • Recursion
• 4. Object-Oriented Python
  • Classes and Instances
    • Python Classes
    • The class Statement
    • The Class Body
      • Attributes of class objects
      • Function definitions in a class body
      • Class-private variables
      • Class documentation strings
    • Descriptors
      • Overriding and nonoverriding descriptors
    • Instances
      • __init__
      • Attributes of instance objects
      • The factory function idiom
      • __new__
    • Attribute Reference Basics
      • Getting an attribute from a class
      • Getting an attribute from an instance
      • Setting an attribute
    • Bound and Unbound Methods
    • Inheritance
      • Method resolution order
      • Overriding attributes
      • Delegating to superclass methods
      • Cooperative superclass method calling
      • Dynamic class definition using the type built-in function
      • Deleting class attributes
    • The Built-in object Type
    • Class-Level Methods
      • Static methods
      • Class methods
    • Properties
      • Why properties are important
      • Properties and inheritance
    • __slots__
    • __getattribute__
    • Per Instance Methods
    • Inheritance from Built-in Types
  • Special Methods
    • General-Purpose Special Methods
    • Special Methods for Containers
      • Sequences
      • Mappings
      • Sets
      • Container slicing
      • Container methods
    • Abstract Base Classes
      • The abc module
      • ABCs in the collections module
      • ABCs in the numbers module
    • Special Methods for Numeric Objects
  • Decorators
  • Metaclasses
    • Alternatives to Custom Metaclasses for Simple Class Customization
    • How Python Determines a Classs Metaclass
    • How a Metaclass Creates a Class
      • Defining and using your own metaclasses
      • A substantial custom metaclass example
    • Data Classes
    • Enumerated Types (Enums)
• 5. Type Annotations
  • History
  • Type-Checking Utilities
    • mypy
    • Other Type Checkers
  • Type Annotation Syntax
  • The typing Module
    • Types
    • Type Expression Parameters
    • Abstract Base Classes
    • Protocols
    • Utilities and Decorators
    • Defining Custom Types
      • Generics and TypeVars
      • Restricting TypeVar to specific types
      • NamedTuple
      • TypedDict
      • TypeAlias
      • NewType
  • Using Type Annotations at Runtime
  • How to Add Type Annotations to Your Code
    • Adding Type Annotations to New Code
    • Adding Type Annotations to Existing Code (Gradual Typing)
    • Using .pyi Stub Files
  • Summary
• 6. Exceptions
  • The try Statement
    • try/except
    • try/finally
    • try/except/finally
  • The raise Statement
  • The with Statement and Context Managers
  • Generators and Exceptions
  • Exception Propagation
  • Exception Objects
    • The Hierarchy of Standard Exceptions
    • Standard Exception Classes
      • OSError subclasses
      • Exceptions wrapping other exceptions or tracebacks
  • Custom Exception Classes
    • Custom Exceptions and Multiple Inheritance
    • Other Exceptions Used in the Standard Library
  • ExceptionGroup and except*
  • Error-Checking Strategies
    • LBYL Versus EAFP
    • Handling Errors in Large Programs
    • Logging Errors
      • The logging module
      • Configuring logging
  • The assert Statement
• 7. Modules and Packages
  • Module Objects
    • The import Statement
      • The module body
      • Attributes of module objects
      • Python built-ins
      • Module documentation strings
      • Module-private variables
    • The from Statement
      • from...import *
      • from versus import
      • Handling import failures
  • Module Loading
    • Built-in Modules
    • Searching the Filesystem for a Module
    • The Main Program
    • Reloading Modules
    • Circular Imports
    • Custom Importers
      • Rebinding __import__
      • Import hooks
  • Packages
    • Special Attributes of Package Objects
    • Absolute Versus Relative Imports
  • Distribution Utilities (distutils) and setuptools
  • Python Environments
    • Enter the Virtual Environment
    • What Is a Virtual Environment?
    • Creating and Deleting Virtual Environments
    • Working with Virtual Environments
    • Managing Dependency Requirements
    • Other Environment Management Solutions
    • Best Practices with Virtualenvs
• 8. Core Built-ins and Standard Library Modules
  • Built-in Types
  • Built-in Functions
  • The sys Module
  • The copy Module
  • The collections Module
    • ChainMap
    • Counter
    • OrderedDict
    • defaultdict
    • deque
  • The functools Module
  • The heapq Module
    • The DecorateSortUndecorate Idiom
  • The argparse Module
  • The itertools Module
• 9. Strings and Things
  • Methods of String Objects
  • The string Module
  • String Formatting
    • Formatted String Literals (F-Strings)
      • Debug printing with f-strings
    • Formatting Using format Calls
    • Value Conversion
    • Value Formatting: The Format Specifier
      • Fill and alignment
      • Sign indication
      • Zero normalization (z)
      • Radix indicator (#)
      • Leading zero indicator (0)
      • Field width
      • Grouping option
      • Precision specification
      • Format type
    • Nested Format Specifications
    • Formatting of User-Coded Classes
    • Legacy String Formatting with %
    • Format Specifier Syntax
  • Text Wrapping and Filling
  • The pprint Module
  • The reprlib Module
  • Unicode
    • The codecs Module
    • The unicodedata Module
• 10. Regular Expressions
  • Regular Expressions and the re Module
    • REs and bytes Versus str
    • Pattern String Syntax
    • Common Regular Expression Idioms
    • Sets of Characters
    • Alternatives
    • Groups
  • Optional Flags
  • Match Versus Search
  • Anchoring at String Start and End
  • Regular Expression Objects
  • Match Objects
  • Functions of the re Module
  • REs and the := Operator
  • The Third-Party regex Module
• 11. File and Text Operations
  • The io Module
    • Creating a File Object with open
      • mode
      • Binary and text modes
      • Buffering
      • Sequential and nonsequential (random) access
    • Attributes and Methods of File Objects
    • Iteration on File Objects
    • File-Like Objects and Polymorphism
  • The tempfile Module
  • Auxiliary Modules for File I/O
    • The fileinput Module
    • The struct Module
  • In-Memory Files: io.StringIO and io.BytesIO
  • Archived and Compressed Files
    • The tarfile Module
      • The TarFile class
      • The TarInfo class
    • The zipfile Module
      • The ZipFile class
      • The ZipInfo class
  • The os Module
    • Filesystem Operations
      • Path-string attributes of the os module
      • Permissions
      • File and directory functions of the os module
      • File descriptor operations
    • The os.path Module
    • OSError Exceptions
  • The errno Module
  • The pathlib Module
  • The stat Module
  • The filecmp Module
  • The fnmatch Module
  • The glob Module
  • The shutil Module
  • Text Input and Output
    • Standard Output and Standard Error
    • The print Function
    • Standard Input
    • The getpass Module
  • Richer-Text I/O
    • The readline Module
    • Console I/O
      • curses
      • The msvcrt module
  • Internationalization
    • The locale Module
    • The gettext Module
      • Using gettext for localization
      • Essential gettext functions
    • More Internationalization Resources
• 12. Persistence and Databases
  • Serialization
    • The csv Module
      • csv functions and classes
      • A csv example
    • The json Module
      • json functions
      • A json example
    • The pickle Module
      • pickle functions and classes
      • A pickling example
      • Pickling instances
      • Pickling customization with the copyreg module
    • The shelve Module
      • A shelving example
  • DBM Modules
    • The dbm Package
    • Examples of DBM-Like File Use
  • The Python Database API (DBAPI)
    • Exception Classes
    • Thread Safety
    • Parameter Style
    • Factory Functions
    • Type Description Attributes
    • The connect Function
    • Connection Objects
    • Cursor Objects
    • DBAPI-Compliant Modules
    • SQLite
      • The sqlite3.Connection class
      • The sqlite3.Row class
      • A sqlite3 example
• 13. Time Operations
  • The time Module
  • The datetime Module
    • The date Class
    • The time Class
    • The datetime Class
    • The timedelta Class
    • The tzinfo Abstract Class
    • The timezone Class
  • The zoneinfo Module
  • The dateutil Module
  • The sched Module
  • The calendar Module
• 14. Customizing Execution
  • Per-Site Customization
  • Termination Functions
  • Dynamic Execution and exec
    • Avoiding exec
    • Expressions
    • compile and Code Objects
    • Never exec or eval Untrusted Code
  • Internal Types
    • Type Objects
    • The Code Object Type
    • The Frame Type
  • Garbage Collection
    • The gc Module
      • Instrumenting garbage collection
    • The weakref Module
• 15. Concurrency: Threads and Processes
  • Threads in Python
  • The threading Module
    • Thread Objects
    • Thread Synchronization Objects
      • Timeout parameters
      • Lock and RLock objects
      • Condition objects
      • Event objects
      • Semaphore and BoundedSemaphore objects
      • Timer objects
      • Barrier objects
    • Thread Local Storage
  • The queue Module
  • The multiprocessing Module
    • Differences Between multiprocessing and threading
      • Structural differences
      • The Process class
      • Differences in queues
    • Sharing State: Classes Value, Array, and Manager
      • The Value class
      • The Array class
      • The Manager class
    • Process Pools
      • The Pool class
      • The AsyncResult class
      • The ThreadPool class
  • The concurrent.futures Module
  • Threaded Program Architecture
  • Process Environment
  • Running Other Programs
    • Using the Subprocess Module
      • What to run, and how
      • Subprocess files
      • Other, advanced arguments
      • Attributes of subprocess.Popen instances
      • Methods of subprocess.Popen instances
    • Running Other Programs with the os Module
  • The mmap Module
    • Methods of mmap Objects
    • Using mmap Objects for IPC
• 16. Numeric Processing
  • Floating-Point Values
  • The math and cmath Modules
  • The statistics Module
  • The operator Module
  • Random and Pseudorandom Numbers
    • The random Module
    • Crypto-Quality Random Numbers: The secrets Module
  • The fractions Module
  • The decimal Module
  • Array Processing
    • The array Module
    • Extensions for Numeric Array Computation
      • NumPy
      • Creating a NumPy array
      • Shape, indexing, and slicing
      • Matrix operations in NumPy
      • SciPy
      • Additional numeric packages
• 17. Testing, Debugging, and Optimizing
  • Testing
    • Unit Testing and System Testing
    • The doctest Module
    • The unittest Module
      • The TestCase class
      • Unit tests dealing with large amounts of data
    • Testing with nose2
    • Testing with pytest
  • Debugging
    • Before You Debug
    • The inspect Module
      • Introspecting callables
      • An example of using inspect
    • The traceback Module
    • The pdb Module
    • Other Debugging Modules
      • ipdb
      • pudb
  • The warnings Module
    • Classes
    • Objects
    • Filters
    • Functions
  • Optimization
    • Developing a Fast-Enough Python Application
    • Benchmarking
    • Large-Scale Optimization
      • List operations
      • String operations
      • Dictionary operations
      • Set operations
      • Summary of big-O times for operations on Python built-in types
    • Profiling
      • The profile module
      • Calibration
      • The pstats module
    • Small-Scale Optimization
      • The timeit module
      • Memoizing
      • Precomputing a lookup table
      • Building up a string from pieces
      • Searching and sorting
      • Avoid exec and from ... import *
      • Short-circuiting of Boolean expressions
      • Short-circuiting of iterators
      • Optimizing loops
      • Using multiprocessing for heavy CPU work
      • Optimizing I/O
• 18. Networking Basics
  • The Berkeley Socket Interface
    • Socket Addresses
    • Client/Server Computing
      • Connectionless client and server structures
      • Connection-oriented client and server structures
    • The socket Module
    • Socket Objects
    • A Connectionless Socket Client
    • A Connectionless Socket Server
    • A Connection-Oriented Socket Client
    • A Connection-Oriented Socket Server
  • Transport Layer Security
  • SSLContext
• 19. Client-Side Network Protocol Modules
  • Email Protocols
    • The poplib Module
    • The smtplib Module
  • HTTP and URL Clients
    • URL Access
    • The urllib Package
      • The urllib.parse module
      • The urllib.request module
    • The Third-Party requests Package
      • Sending requests
      • requests optional named parameters
      • The files argument (and other ways to specify the requests body)
      • How to interpret requests examples
      • The Response class
  • Other Network Protocols
• 20. Serving HTTP
  • http.server
  • WSGI
    • WSGI Servers
    • ASGI
  • Python Web Frameworks
    • Full-Stack Versus Lightweight Frameworks
    • A Few Popular Full-Stack Frameworks
    • Considerations When Using Lightweight Frameworks
    • A Few Popular Lightweight Frameworks
      • Flask
        • Flask request objects
        • Flask response objects
      • FastAPI
• 21. Email, MIME, and Other Network Encodings
  • MIME and Email Format Handling
    • Functions in the email Package
    • The email.message Module
    • The email.Generator Module
    • Creating Messages
    • The email.encoders Module
    • The email.utils Module
    • Example Uses of the email Package
  • Encoding Binary Data as ASCII Text
    • The base64 Module
    • The quopri Module
    • The uu Module
• 22. Structured Text: HTML
  • The html.entities Module
  • The BeautifulSoup Third-Party Package
    • The BeautifulSoup Class
      • Which parser BeautifulSoup uses
      • BeautifulSoup, Unicode, and encoding
    • The Navigable Classes of bs4
      • Indexing instances of Tag
      • Getting an actual string
      • Attribute references on instances of BeautifulSoup and Tag
      • contents, children, and descendants
      • parent and parents
      • next_sibling, previous_sibling, next_siblings, and previous_siblings
      • next_element, previous_element, next_elements, and previous_elements
    • bs4 find Methods (aka Search Methods)
      • Arguments of search methods
        • Filters
        • name
        • string
        • attrs
        • Other named arguments
    • bs4 CSS Selectors
    • An HTML Parsing Example with BeautifulSoup
  • Generating HTML
    • Editing and Creating HTML with bs4
      • Building and adding new nodes
      • Replacing and removing nodes
    • Building HTML with bs4
    • Templating
    • The jinja2 Package
      • The jinja2.Environment class
      • The jinja2.Template class
      • Building HTML with jinja2
• 23. Structured Text: XML
  • ElementTree
    • The Element Class
    • The ElementTree Class
    • Functions in the ElementTree Module
  • Parsing XML with ElementTree.parse
    • Selecting Elements from an ElementTree
    • Editing an ElementTree
  • Building an ElementTree from Scratch
  • Parsing XML Iteratively
• 24. Packaging Programs and Extensions
  • What We Dont Cover in This Chapter
  • A Brief History of Python Packaging
  • Online Material
• 25. Extending and Embedding Classic Python
  • Online Material
• 26. v3.7 to v3.n Migration
  • Significant Changes in Python Through 3.11
  • Planning a Python Version Upgrade
    • Choosing a Target Version
    • Scoping the Work
    • Applying the Code Changes
    • Upgrade Automation Using pyupgrade
    • Multiversion Testing
    • Use a Controlled Deployment Process
    • How Often Should You Upgrade?
  • Summary
• A. New Features and Changes in Python 3.7 Through 3.11
  • Python 3.7
  • Python 3.8
  • Python 3.9
  • Python 3.10
  • Python 3.11
• Index